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Code 12 on 94 celica kills engine after 10 to 20 minutes of driving

(1993 Toyota Camry)
in Ione, OR on January 13, 2018
Ive have a toyota celica that has code 12 showing that will shut engine off after driving for a little while. After it aits for about 20 minutes starts back up and drives again for 10ish minutes before dying again. Repeats over and over again
What seems to make the problem better or worse? After warmes up
How long have you had this problem? Over a year got a different vehicle
Tags: wont stay running, toyota, camry, wont stay running, toyota celica
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Displaying 2 answers & 9 comments
Popular Answer
on January 13, 2018
Check for ignition spark while the engine will not start ... IF no spark is present .. It is 'more' than likely related to the distributor *assembly*...
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on January 13, 2018
I have checked the primary and secondary coils and both are within specs. Wouldnt distributor problems not allow the vehicle to start at all or run poorly?
on January 13, 2018
yes,see other answer....
on January 13, 2018
This vehicle has a multi component distributor - including the crank angle sensor - code 12 indicates no rpm signal to ECM .. Ignition coil is not responsible for sending cranking signal .. IF the coil passed all ohm test .. Then it should be ok.

Other than coil replacement - This distributor is non serviceable .. *Intermittent* failures are common on older vehicles.

Hands-on testing is the only way to prove the failure - no way to accurately guess at it.

The fuel pump must also receive cranking signal from ECM before it will operate.

IF parts replacement is desired method for testing .. You can replace the distributor ASSEMBLY and hope for the best.

Good luck!
on January 13, 2018
So my rpm gauge isnt working or isnt sending the right signal?
I am going to buy a new coil, mine seems to have oil like fluid on it but not on any other parts. Could the coil overheat and send mixed signals to the ECM until cooled off?
on January 13, 2018
Re-read last reply.


I found this interesting thread:

on January 20, 2018
I replaced the coil, cap, rotor, wires and spark plugs, once again the vehicle starts up great and will run until it decides thats enough. I am going to look into the crank shaft sensor and test it next
on January 20, 2018
There is no actual crankshaft position sensor on the 1994 year model - *crank angel sensor* is an integral part of the distributor ‘assembly’ .. Usually the distributor ASSEMBLY is what actually should be replaced due to age and wear .. I can’t guarantee that will fix this problem - that’s just what I recommend - which is all ‘anyone’ can do online.
on January 20, 2018
Ok thank you ill give it a wirl
on January 21, 2018
three things you can do if guessing and replacing parts. (1) cut/clip the wire on the radio interference capacitor/condenser. cut the wire lead from the capacitor going to the terminal connection,reach in with small side cutters and just clip the connection(or just take it out). the purpose of this was to eliminate radio interference from the distributor. more than likely the radio interference capacitor had melted.this should fix your problem. (2) or take a chance and go to the scrap yard and buy a used distributor(not recommended). (3) order a new distributor from ebay for $51.99 free shipping "LIFETIME WARRANTY) E-bay item number 131429230714....Seller information>>ebay user name is "parts_galaxy"
on January 13, 2018
look the ignition coil over real good,it maybe is cracked.if so,easy cheap fix!
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